Question: What are the isolated human group which start with the letter w
Paraphrase: What are the disconnected human gather which begin with the letter w
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q3117863 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'w')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Western Apache, Western Apache, Warini, Warini, Wasco-Wishram people, Wasco-Wishram people, Wenrohronon, Wenrohronon, Wappinger, Wappinger, Wai-wai people, Wai-wai people, Waco tribe, Waco tribe, weenhayek, weenhayek